year = int(input("请输入任意一个年份"))
if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
    print(str(year) + "年是闰年！")
else:
    print(str(year) + "年不是闰年！")
    # print(　year, "年不是闰年！")
